"You wanna know how you do it? Here's how: they pull a knife, you pull a gun. He sends one of yours to the hospital, you send one of his to the morgue. That's the Chicago way, and that's how you get Capone! Now do you want to do that? Are you ready to do that?"
(Shame on you if you had to Google that to know the quote's origin.)

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No One Lives Forever 2 is still the best PC game of all time.